Bagasse-furnace



(No Model.)

I'. G 0 O K.

BAGASSE PURNAGB. No. 880,992. Patented Apr'. l0, 1888.

NITED STATES PATENT OFFICE.

FREDERIC COOK, OF NEW ORLEANS, LOUISIANA.

` eAGAssE-FURNACE.

SPECIFICATION forming part of Letters Patent No. 380,992, dated April l0, 1888.

Serial No. 234,319. (No model.)

Y of which the following is a specification.

This invention has for its object to provide a novel furnace for burning bagasse or refuse from sugarniills and utilizing the heat derived therefrom for heating the steam boiler or boilers. This object I accomplish by the features of construction and combination of parts hereinafter described and claimed, reference being made to the accompanying drawings, in which- Figure l is a vertical sectional View of a furnace embodying my invention; Fig. 2, a horizontal sectional View on the line a: x, Fig.

. l; Fig. 3, a sectional view on the line yy, Fig.

1; and Fig. 4, a sectional view on the line zz, Fig. 1.

In order to enableihose skilled in the art to make and use my invention, I will now describe the same in detail, referring to the drawings, where The letter A indicates the furnace, having the oven-shaped combustion-chamber-E,which is arched at its top and at its bottom slopes at front and rear, as at a, into a contracted base, I, the front and rear walls of which contain the tuyere irons G. These walls are surrounded at front, rear, and one side with a continuous airspace, F, the side having an opening, F', to receive the discharge-nozzle of an air-blower, H. From the oven-shaped com bustion-chainber E extend rearward flues J, separated by a dividing-wall, J', and eXtending to and under the multitubular water-tube boiler K K, the tube portion of the boiler being inclined and resting on a bridge-wall, L, having an upward extension, M. In rear of said bridge-wall and above the tube part of the boiler is a depending detlector, N, having a downward extension, O.

The bagasse when Afed into the combustionchamber E and contracted base I assumes a pyramidal heap, and I therefore arrange the tuyere-irons G in each wall from bottom to top in pyramidal form, as clearly seen in Fig. 3. In other words,t`ne number of tuyeres decrease from the bottom upward, though all occupy relatively the same distance apart, or substantially so. v

The bagasse comes from the sugar-mill by the carrier C and is discharged through a feeder, D, into the combustion chamber E. Air is forced by blower H into the air-passages F and through the tuyere-irons G. The gases of combustion strike the bridge-wall L and its continuation M, which causes them to take the upward course shown by the arrows. The defiector N and its continuation O deiiect the gases downward, when they are again drawn upward behind the detlector N and pass outto the chimney l? through the tlue Q.

The rear wall of the furnace is provided with a large door, R, placed so that each tube of the boiler can be cleaned from behind, or can be removed and another tube substituted in case of repairs. l

The letter S indicates the mixing-chamber, the roof of which is formed by the water-tubes of the boiler, and T is a bridge-wall under the mud-drum U of the water-tube boiler.

rIhere can be one or more bridges M O to turn the heat upward and downward. If two are used, the setting is as shown. if only one is used, then the heat has one upward and one downward course and passes out to stack below the rear end of the water-tubes.

The tuyere-irons are set in a shape to conform to the pyramid of bagasse, so that the air may strike it direct and be prevented from passing over it, to the injury of the temperature of the furnace.

The steam and water cylinder or drum K of the water-tube boiler connects at each end with the ends of the water-tubes of the multitubular boiler K K, and the entire arrangement is such that the heat from the bagasseburner mixing-chamber S, Fig. l, iirst strikes the water-tubes in an upward direction, and, after passing through between the tubes, strikes the steam and water cylinder or drum K over the tubes, the result being a large saving of fuel, a greatly-increased production of steam, a perfect combustion, and a large heating-surface.

I do not claim herein the invention described and claimed in my Letters Patent dated November 8, 1887, No. 372,969.

IOO

Having thus described my invention, what I claim is l. A furnace for burning bagasse, having the oven-shaped combustion-chamber E, sloping at front and rear into a contracted base, I, the air-fines F, extending around the front, rear, and side walls of said base, the tuyeres G, arranged in said front and rear walls of the contracted base, an air-forcer connected with said air-nues, the lues J, leading from the ovenchamber, the bridge-Wall L, the deiector N, and a. multitubnlar part of boiler located between the bridge-Wall and the deieetor, substantially as described.

2. A furnace for burning bagasse, having the ovenshaped combustion-chamber E, sloping Witnesses:

GEO., MONTGOMERY, F. F. TUNEHAED. 

